论文部分内容阅读
铁路运输正朝着重载快速的方向发展,尤其是在坡道和小半径弯道的山区,提高重轨的使用寿命更有着重要意义。提高重轨质量,延长使用寿命,一般都从合金化和工艺两个方面来考虑,热处理是在工艺方面提高钢轨性能的既经济又有效的手段之一。包钢轨梁厂、钢研所、科技处和包头冶金设计院一起,将轧态交货使用的P_(74)重轨进行了热处理,经铺路试用,寿命提高了1—2倍。包钢自一九七一年试生产淬火轨,采用的热处理方式是:钢轨在煤气炉中整体加热,冷却对轨头淬火,轨腰常化,轨底适当强化的方法.不仅提高了轨头的强度、耐磨
Rail transport is moving rapidly toward heavy loads. Especially in mountainous areas with ramps and small radius bends, it is even more important to improve the service life of heavy rail. Improve the quality of heavy rail to extend the service life, generally from both the alloy and process considerations, heat treatment is to improve rail performance in the process of both economic and effective means. Baotou Steel Track and Trailer Works, Steel Research Institute, Science and Technology Department and Baotou Metallurgical Design Institute, together with the P_ (74) heavy rail used for rolling delivery, have been heat-treated. Baotou trial production of hardened rail since 1973, the use of heat treatment is: rail heating in the gas furnace as a whole, quenching the rail head cooling, rail waist normalization, the right way to strengthen the rail. Not only increased rail head The strength, wear-resistant